How does ECU Flash effect MPGs?

customer said:
At higher elevations I got 55-56 mpg with several tanks. Blew me away, best before that was 46. Back to 45 at home though:-( lol.

Rode as I did the past 2 weeks from lewiston to priest and got 45.9mpg. Elevation in lewiston is 745, our house at priest is 2475. My best gas mpg was at 6000ft and above. Higher altitude has to be playing a role somehow. I sure don't understand how though. BTW I did get to 200 miles on 1 tank of gas at the Grand Canyon, yes the light had been blinking for 20 miles. That was pretty cool

Quick update on mpg after flash. Just got back from a tour of 4200 miles through idaho, utah, Arizona, Colarado, Wyoming and Montana. I was fully loaded with givi 42l keyless side bags and 39l top case, with a tent, pad and 2 sleeping bags on the rear seat. Through idaho I got 43mpg 1st tank, 48 next 2. In utah things changed. From moab on I got 52, 56, 54. From just outside the north rim to the south rim of the Grand Canyon I got 55.7. In Colarado through all the peaks I consistently got 54-56 mpg. Once we hit Wyoming and Montana mpg went out the window. Had head winds and thunderstorms a lot of it, got 43 - 43.8 at freeway speeds, going through yellowstone I got 50.3. I am happy about mpg but also confused about why so good. Before flash the best it ever did touring was 45 with most being 42 no matter where or what speed etc I was doing. And empty tooling around home after the flash the best she did was 45mpg. So I guess I have a question here as well. Would the high altitude and desert conditions contribute to the better mpg? My best mpg day in the desert I ran 85 octane. Worst was with a tank of 92 octane. The rest was 87-89 octane.
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on a stock bike. other customers are reporting mid 40's regularly.

personally i'm averaging 38-42 no matter how i ride the back after the flash, i have a gytr slip on. i just did 10,501 miles across the US and back over 3 weeks and if i was riding hard twisties, in city, or 1,000 mile days of slab, it never varied from the lowest of 37, or highest of 44, but those were once each, the rest of the many tanks of gas i went through were all 38-42 like clockwork. this was with my side cases and pack tied down on the rear which was like a wind sail (and wouldnt let me get over 160 no matter how tucked i got) also, turns out bungies and cargo netting will hold at 160 luckily.

also, since back home from my trip, i've done two track days and while riding at track day pace, still getting 37-38 mpg.
 
Fuelly lists a great deal of Gen II FZ1 riders with many thousands of miles tracked. After a search and selecting the top 100, the absolute best is 38.2 MPG average. There is something very different or wrong with any Gen II reporting over 40 MPG with any sort of consistency. I'm guessing that the sprockets are changed in favor of MPG which, of course, makes the ODO incorrect thus the bike is providing false information. My 2009 with all the mods and flash was consistent around 30 mpg with a dead-on measured mile from the corrected ODO (SpeedoDRD and a 55R rear with OEM sprockets and a leaner map than what Ivan provided with the flash). I'm not doubting that some get better MPG than this, but I'm calling BS on any claims over 40 mpg if you've factored in the margin of error built-in to all bikes (running uncorrected OEM).

Hundreds of riders reporting on Fuelly cannot be wrong. :D
 
a7x3797 said:
What kind of gas do you use? What's your gearing?
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regular gas and stock gearing

FZ1inNH said:
Fuelly lists a great deal of Gen II FZ1 riders with many thousands of miles tracked. After a search and selecting the top 100, the absolute best is 38.2 MPG average. There is something very different or wrong with any Gen II reporting over 40 MPG with any sort of consistency. I'm guessing that the sprockets are changed in favor of MPG which, of course, makes the ODO incorrect thus the bike is providing false information. My 2009 with all the mods and flash was consistent around 30 mpg with a dead-on measured mile from the corrected ODO (SpeedoDRD and a 55R rear with OEM sprockets and a leaner map than what Ivan provided with the flash). I'm not doubting that some get better MPG than this, but I'm calling BS on any claims over 40 mpg if you've factored in the margin of error built-in to all bikes (running uncorrected OEM).

Hundreds of riders reporting on Fuelly cannot be wrong. :D
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i'll take pics of the gps for the next few tanks and let ya know.
 
loosenut said:
Jared, if your getting better than 35MPG at a track your getting beat by Ninja 250's. Just kidding!
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HA well i'm control riding/instructing the beginner group and intermediate group, fz1 can't really do an advanced group pace, i scrape the pegs in every corner as is while hanging off like a monkey and its just not enough corner speed, can't get ground clearance with stock pegs, vortex are on the way though

ballmead said:
BTW Yamaha lists a stock GenII FZ1 at 35 US MPG. At a track day you'd be lucky to get 30 US MPG and that would be in the slow group.
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you'd be surprised what a flashed fz1 can do ;)
 
then maybe you just got shitty fueling in your bike, there's not much other explanation for it now is there, where's the dyno graphs showing your air fuel ratios?
 
jared p said:
then maybe you just got shitty fueling in your bike, there's not much other explanation for it now is there, where's the dyno graphs showing your air fuel ratios?
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Where is anyone's dyno chart with Ivan's flash? He says there's no need as his map with the flash and the TPS setting is all we need. I don't see any other Ivan-flashed riders singing about such high fuel mileage. Maybe your bike is actually wrong in favor of better MPG when, in fact, you are not actually achieving such numbers?
 
I would take what jared p posts with a grain of salt. He's pushing a flash that some have suspected he gets a piece of the action.
 
i've told plenty of people to get the ivans flash cuz its more convenient for them (they're on the east coast, shorter shipping times), i dont really care where you get it, just that you get it. the flash is about the exact same no matter where you get it, differences being in extra little stuff, not performance stuff.

i volunteer for nels, he doesn't pay me, he trades what i do for work on my bike or car or whatever when i need it or transport to track days etc

i've never seen an fz1 get so low under 30mpg and the only way i can see it being possible is if the fueling is off

also i seen ivans maps, they're usually rich. hence why i recommend anyone with any flash from anywhere, gets baseline runs afterwards to fact check it. if its nels, ivans, ecunleashed, ecuwest (australia), hilltop (uk) or flashtune. why would any company not want people to verify their product?
 
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Ok, so for the sake of science, I will conduct the most boring test ride that I have ever performed in the history of my riding a motorcycle, just to see what sort of fuel economy I can get out of an Ivan's flashed ECU with my -1+2 gearing on my FZ1N.

I'll fill up at the Prestons Caltex Woolworths and slab the Hume Hwy to Mittagong and back again to the Caltex at Prestons where I will fill up again.

It's a round trip of around 145 klms (90 miles). I don't think I could bear any more hwy miles than this ;)

I'll keep the revs as low as possible and will ride at the posted speed limits which will be a maximum of 110 kph (68 mph) as seen on the Hume hwy.

Here is a link to the route I'll be taking:

https://www.google.com.au/maps/dir/...2m2!1d150.872025!2d-33.955501!1m0!2m1!2b1!3e0

Wish me luck.
 
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Jared, I love you man. Just kidding. But I do like the fact that you are not afraid to tell people what they don't want to hear. It doesn't surprise me that people get much different MPG's with Ivan's flash. Let's look at the facts.

Ivan developed his flash in house on his own FZ1. He says so himself on his website.

Yamaha has changed the base fuel maps over the years to sort out the poor fueling on earlier models. I believe they changed fueling in 2009 and 2011. Dates may be wrong.

Ivan uses PCV maps developed on his bike with his bikes base fueling. He admits to not changing any of the base fueling maps.

So. If Yamaha made the base fueling rich in some areas, and Ivan did the same. Well, there you have it. I bike that may be running very rich in some areas killing fuel economy. Here's where people usually chime in with "no way, my bike runs perfect". It probably does. But it can be running rich where performance is not much of an issue, like steady cruise.

These are very simple facts. However some will choose not to believe them and accept that 28 MPG's is fine. Others will say its impossible that Ivan's maps are not perfect. I say there's no way they can be. Unless he bought every ECU that there were known fueling changes, and developed different maps for each, which we all know he didn't or he would offer different maps for different years. Very expensive and time consuming. By the way Two Brothers, Dynojet and various ecu flash companies offer different maps for different year bikes. I wonder why?

I've brought this up in the past, however it always falls on deaf ears. I just can't believe no one has dynoed Ivan's flash to adjust the fueling. That was the whole purpose of him using the PCV maps. Jared, I believe you dynoed a bike that had an Ivan's flash and you stated the fueling was a bit off. No one believed you either. Oh well.
 
The fact the carbureted first gen gets much, much better fuel economy without a huge sacrifice in power says a lot about the state of the fuelling on the second gen. I would imagine there is room for improvement on the AFR as Jared says
 
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